Sahih Muslim , Book 43, Hadith 45 (In-Book) ⓘ
Ibn 'Umar reported Allah's Messenger as saying: There is before you a Cistern and the distance between its two sides is as it is between Jarba' and Adhruh.
حَدَّثَنَا أَبُو الرَّبِيعِ الزَّهْرَانِيُّ، وَأَبُو كَامِلٍ الْجَحْدَرِيُّ قَالاَ حَدَّثَنَا حَمَّادٌ، - وَهُوَ ابْنُ زَيْدٍ - حَدَّثَنَا أَيُّوبُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ أَمَامَكُمْ حَوْضًا مَا بَيْنَ نَاحِيَتَيْهِ كَمَا بَيْنَ جَرْبَا وَأَذْرُحَ " .
also referenced under: Hadith 2299 (Reference) & Book 30, Hadith 5696 (USC-MSA)